STAMFORD — Thanksgiving celebrations turned ugly Thursday night when a fight broke out between neighbors in an apartment complex in the 100 block of Henry Street. Stamford Police Sgt. Robert Shawinsky said officers responded to the complex about 11:30 p.m after receiving a report of a fight involving four people. “When the officers arrived, they observed blood all over (one) apartment and a broken knife handle on the floor,” Shawinsky said.